Suppose that two stars are separated in the sky by 0.01 arcsecond, and you observe them with a telescope that has an angular resolution of 1 arcsecond. What will you see?
A. The two stars will each be distinctly visible.
B. The stars will not be visible to the telescope at all.
C. The light of the two stars will overlap in a way that makes them look like an oval or small line segment in the sky.
D. The light from the two stars will be blended together so that they look like one star.
Ans: D. The light from the two stars will be blended together so that they look like one star.
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You lift a 1 kg object [weight on Earth = 10 N] by 1 m. By about how much does the object's mass increase?
A) 10-12 kg B) 0.01 kg C) 10-16 kg D) 10-14 kg E) Its mass doesn't change at all.
State in your own words the relationship between the area of a circle and the radius2 for the same circle. Use the graph plotted in Procedure 3 to help you formulate this answer
Many of the ancient astronomers applied astrology alongside astronomy, but that no longer holds true for modern astronomers. Explain why astrology is no longer considered useful to the modern scientist
What will be an ideal response?
Estimate the time required to melt a 5-mm sheet of ice on an aircraft wing if the wing surface is heated to 60ºC and the surrounding air is -10ºC. Assume that the average convective heat transfer coefficients are 20 W/m^2? K for the air/ice and 10 W/m^2?K for the ice/melted water.
What will be an ideal response?